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Hydroponics helps...

Hydroponics helps

A

To identify essential elements for plants

B

To identify dficiency symptoms of element

C

To study plant responses towards light

D

All except (3)

Text Solution

Verified by Experts

The correct Answer is:
D
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Hydroponics have been shown to be a successful technique for growing of plants. Yet most of the crops are still grown on land . Why ?

Assertion : If you burn a plant , its nitrogen component is given off as ammonia and other gases . Reason : Hydroponics does not allow plants to grow well if they are supplied with all the mineral nutrients they need.